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.github/workflows/install.yml

@@ -8,6 +8,8 @@
 ##################################
 
 name: Installation
+
+# Run on PR that modifies the installation scripts, weekly, or manually
 on:
   workflow_dispatch:
   pull_request:
@@ -19,9 +21,12 @@ on:
       - 'wally-package-install.sh'
   schedule:
     - cron: "0 0 * * 3" # Run at 12:00 AM on Wednesdays
+
+# Use bash shell with extra GitHub Actions options for all jobs
 defaults:
   run:
     shell: bash
+
 jobs:
   installation_test:
     name: Test installation for ${{ matrix.name }}
@@ -63,21 +68,26 @@ jobs:
             image: null
             riscv_path: /home/riscv
 
+    # run on selected version of ubuntu or on ubuntu-latest with docker image
     runs-on: ${{ matrix.os }}
     container:
       image: ${{ matrix.image }}
-      options: --privileged --mount type=bind,source=/,target=/host --pid=host --entrypoint /bin/bash
+      options: --privileged --mount type=bind,source=/,target=/host --pid=host --entrypoint /bin/bash # Allow for connection with host
+
     steps:
+      # Docker images need git installed or the checkout action fails
       - name: Install Dependencies for Red Hat
         if: ${{ matrix.image != null }}
         run: |
             dnf install -y sudo git
             dnf install curl -y --allowerasing || true
+      # Only clone submodules needed for standard tests/regression to save space
       - uses: actions/checkout@v4
       - name: Clone Necessary Submodules
         run: |
               git config --global --add safe.directory '*'
               git submodule update --init addins/riscv-arch-test addins/verilog-ethernet
+      # Free up space on the host machine, either from the container or the host
       - name: Free Up Storage
         run: |
               df -h
@@ -87,6 +97,7 @@ jobs:
                 nsenter -t 1 -m -u -n -i bash -c "$(cat .github/cli-space-cleanup.sh)"
               fi
               df -h
+      # Run main tool chain installation script, either as a user or system wide
       - name: Install
         run: |
               if [ -z ${{ matrix.user }} ]; then
@@ -95,32 +106,38 @@ jobs:
                 sudo ./bin/wally-package-install.sh
                 ./bin/wally-tool-chain-install.sh --clean ${{ matrix.riscv_path }}
               fi
+      # Set environment variables for the rest of the job
       - name: Set Environment Variables
         run: |
               if [ ! -z ${{ matrix.riscv_path }} ]; then
                 sed -i 's,exit 1,export RISCV=${{ matrix.riscv_path }},g' setup.sh
               fi
               source setup.sh
               echo "RISCV=$RISCV" >> "$GITHUB_ENV"
+      # Upload installation logs for debugging
       - name: Upload Installation Logs
         uses: actions/upload-artifact@v4
         if: always()
         with:
           name: installation-logs-${{ matrix.name }}
           path: ${{ env.RISCV }}/logs/
+      # Make riscof only as that is the only testsuite used by standard regression
       - name: make tests
         run: |
               source setup.sh
               make riscof --jobs $(nproc --ignore 1)
+      # Only the linux-testvectors are needed, so remove the rest of the buildroot to save space
       - name: Remove Buildroot to Save Space
         run: |
               sudo rm -rf $RISCV/buildroot/output/build
               df -h
+      # Run standard regression, skipping distros that are known to be broken with Verilator
       - name: Regression
         if: ${{ matrix.name != 'ubuntu-20.04' && matrix.name != 'rocky-8' && matrix.name != 'almalinux-8'}}
         run: |
               source setup.sh
               regression-wally
+      # Upload regression logs for debugging
       - name: Upload regression logs
         uses: actions/upload-artifact@v4
         if: always()